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2 years ago

PLS HELP!! i will fail if i don’t get this right:(

Mathematics

1 answer:

andre [41]2 years ago

3 0

Find the reciprocal of the second fraction: -9/4, and multiply it instead of dividing.
2/3 x -9/4 = -18/12. By reducing it’ll be -3/2, or -1 1/2 in mixed form.

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How many solutions does the system of equations below have? y = 3x + 2 Y-2x = 4 a) More than 1 solution b) At least 1 solution c

Lelechka [254]

Answer: c)1 solution

y=3x+2
y=4+2x
put the value of either y in another
3x+2 =4+2x
x=2

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3 years ago

Read 2 more answers

15. For each of the following, write the probability as the intersection of two events. Then, indicate whether the two events ar

LuckyWell [14K]

Answer:

Step-by-step explanation:

a. The probability of selecting a 6 from the first draw and a 7 on the second draw when two balls are selected without replacement from a container with 10 balls numbered 1 to 10

Not independent because without replacement

Prob for both = $\frac{1}{10} \frac{1}{9} \\=\frac{1}{90}$

b. The probability of selecting a 6 on the first draw and a 7 on the second draw when two balls are selected with replacement from a container with 10 balls numbered 1 to 10

Here independent because with replacement makes probability independent.

Prob for both = P(A) *P(B) = $\frac{1}{10} *\frac{1}{10} \\=\frac{1}{100}$ d

c. The probability that two people selected at random in a shopping mall on a very busy Saturday both have a birthday in the month of June. Assume that all 365 birthdays are equally

likely, and ignore the possibility of a February 29 leap-year birthday.

Here independent because one person birthday will not affect the other person birthday

Prob for both = $(\frac{30}{365})^2\\ =\frac{25}{5329}$

d. The probability that two socks selected at random from a drawer containing 10 black socks and 6 white socks will both be black

Prob for I sock black = 10/16 and II sock black if first sock is black = 9/15

Hence not independent

Prob for both = $\frac{10C2}{16C2} \\=\frac{3}{8}$

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4 years ago

On November 1, all the Halloween candy at a grocery store is marked

Neko [114]

Answer:

90%

Step-by-step explanation:

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3 years ago

Radical and complex numbers continued.....

Natasha2012 [34]

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ii = i^2 = -1

-40*-1 = 40

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5i- - 5i = 5i + 5i = 10i

answer = -15 +10i

3. raise both sides to the 3rd, and solve for x. x = -12

4. the equation would be x^2+36 =0

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4 years ago

Which value of x is in the solution set of the following inequality. -3x +5 >7

Vadim26 [7]

I’m not sure if this was a typo, but A and B are the same answer. A and B are correct, because when you solve this the answer has to be anything less than -0.6.

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4 years ago